If a menstruating woman misses the fast of ‘Ashoora’, can she make it up after that?

If a women is in impure condition on 9th 10th and 11th of Muharram,
due to which she can not fast. is it possible to make up those fast on
other days after her GUSUL?.
Praise be to Allaah.
If a person misses the fast of 'Ashoora', it cannot be made up because
there is no proof for that, and because the reward is connected to
fasting on the tenth day of Muharram, and that timehas passed.
Shaykh Ibn 'Uthaymeen (may Allah have mercy on him) was asked: If
theday of 'Ashoora' comes and the woman is menstruating, can she make
up the fast? Is there a principle concerning naafil acts ofworship
that may be made up and those that may not be made up? May Allah
reward you with good.
He replied: Naafil acts of worship are of two types: those for which
there is a reason and those for which there is no reason. Those for
which there is a reason end when the reason ends, and they cannot be
made up. An example of that is tahiyyat al-masjid (two rak'ahs
to"greet the mosque"). If aman comes and sits down, and sits for a
longtime, then he gets up wanting to pray tahiyyatal-masjid, it will
not be tahiyyat al-masjid, because that is a prayer that is done for a
reason and is connected to the reason; once the reason no longer
applies, it is no longer prescribed. Another example, it would seem,
is the day of 'Arafah and the day of'Ashoora'. If a person delays
fasting the day of 'Arafah and the day of 'Ashoora', with no excuse,
there is no doubtthat it cannot be made up and it would not benefit
him if he did make it up, i.e., it would not benefit him in the sense
of it being the day of 'Arafah or the day of 'Ashoora'.
But if that day comes when a person has an excuse, such as the woman
who is menstruating or bleeding following childbirth, or a person who
is sick, then it seems that it cannot be made up in this case either,
because it is connected to a specific day and the ruling ceases to
apply once thatday is past.
End quote from Majmoo'Fataawa Ibn 'Uthaymeen, 20/43
But if a person is excused for not fasting –such as women who are
menstruating or bleeding following childbirth, or those who are sick
or are travelling – and he usually fasts on that day or he had the
intention of fasting that day, then he will be rewarded for his
intention, because of thereport narrated by al-Bukhaari (2996) from
Abu Moosa (may Allah bepleased with him) who said: The Messenger of
Allah (blessings and peace of Allah be upon him) said: "If a person
falls sick or travels, he will have a reward recorded for him like
that of what he used to do when he was at home and was healthy."
Ibn Hajar (may Allah have mercy on him) said:"He will have a reward
recorded for him like that of what he used to do when he was at home
and was healthy" means that he is like onewho used to do an act
ofworship then was prevented from doing it,but he had the
intentionthat were it not for the obstacle he would have continued to
do it. End quote.
Fath al-Baari.
And Allah knows best.