She and I ----out for a walk every morning.应该选goes 还是go

and 是连词,这句话的主语是 she and I,所以是两个人,用 go.
但如果把 and 换成介词 with 的话,I 会变成 me,那么就应该用 goes 了,因为这是的主语只有 she,with me 就只是状语而已.