Imaam Ibnul Qayyim (رحمه الله تعالى) stated in Al Hady An Nabawi 5/507:
"She is not prohibited from cutting her nails, and plucking the hair from her armpits and cutting the hair which is preferred to be cut, nor from bathing with lotus leaves and combing her hair with it."
Ibn Taymiyyah (رحمه الله تعالى) said,
"It is permissible for her to eat anything that Allaah has made permissible, like fruit and meat and also any drink that is permissible. She is not prohibited from doing any kind of work that is permissible, for example; embroidery, sewing, spinning, and other things which women do. All things which are normally permissible for her outside the 'Iddah period are allowable for her, for example; speaking to those she has a need to speak to among men, if she is covered, and other things. This point that I have mentioned is the Sunnah of Rasoolullaah which the Sahaabiyaat used to do when their husbands died."
(Majmu'l Fataawa 34:27-28)
Shaykh Fawzaan (حفظه الله) said, "What the lay people say, that she should cover her face from the moon, and not climb the roof of her house, and not talk to men, and that she should shield her face in front of her mahram, and similar things, none of these have any proof, Allaahu Aa'lam."