Rashi
And she shall pursue Heb. וְרִדְּפָה This is one of the intensive conjugations. Comp. (Proverbs 12:11) “and he who pursues empty ones” (porcacier in O.F:, poursuivra in modern French), to pursue. I.e. she will follow them and not overtake them.
Rashi
her lovers Egypt and Assyria, and you will not be able to seek aid from them.
Rashi
and she shall seek them Heb. וּבִקְשָׁתַם, a combination of וּבִקְשָׁה אוֹתָם.