The time of the morning nāfilah starts before the Fajr prayer , f r o m the Fajr adhan until the appearance of redness in the east, and it is possible to perform that immediately after the night prayer.
It depends on the intention of the wife, if she hopes to convince her husband to return then it is not considered as abandoning the homeland and if there is no hope, then it is considered to be an inevitable abandonment.
He should perform the qaḍā of prayers (i.e. perform them again later as compensation) that he has performed completely.
In that case, they can perform their prayers in any direction.
It is well-known that wearing black clothing for prayer is makrūh and the reason behind it applies to both men and women; but cloak is an exception and it is likely that black Chador is also an exception.
He/She should recite them in a low voice.
If it is not too difficult for them, they need to perform their prayers in standing position, even though they do it by using a cane and the like. However, if it causes them much difficulty and discomfort, they can perform their prayers in a sitting position.
It is better to recite tashahhud or other dhikrs while in tajāfi posture.
If a person wants to stay 10 days or more in a place, in this case prayers should be performed complete and the person must fast. And if this person wants to stay less than 10 days then prayers should be performed shortened and the person cannot fast. The beginning of 10 days is from the moment of entering the destination, for example from noon of the first day of arrival until noon of the next day is considered as one day.
The Paternal homeland of a person is not considered as the homeland of that person unless he/she stays there continuously for a long time like one year.
There is no issue with doing this, but if that person doesn’t join the congregation before rukū‘ of the first rak‘at then his/her right is voided.
Closing the eyes during prayer is Makrooh but if it is the only way of having presence of the heart (complete concentration) then it is likely to be Mustahab.