Ответ:
Her husband suggested seeing a horror after work
Объяснение:
Вы правы, согласно правилу после suggest нельзя использовать инфинитив.
Правило:
We can use the verb suggest with a noun phrase, a that-clause, the -ing form of a verb or a wh-question word (where, what).
We don’t use suggest + to-infinitive!