a key under the mat.

垫子下面有钥匙
That's risky for a single woman, leaving a key out like that.

就一个单身女人来说这可有点冒险啊
If he stalked her, he would have had complete access to her here.

如果他跟着她那么进来是轻而易举
But he waited and abducted her in public.

但他却在公共场合伺机绑架了她
The same way that he took her daughter.

就和他当年绑架她女儿一样
So this letter Monica allegedly received from her daughter

莫妮卡收到的这封所谓的女儿的信
contains no indication of female authorship.

其中没有任何女性特征
It lacks expression of emotional attachment.

缺乏情感表达
The unsub wrote it?

是凶手写的吗
I believe so. The language used is inconsistent

我觉得是信中所用的语句
with that of a 15-year-old held in captivity for 7 years.

不是一个被绑架了七年的十五岁孩子写的
Uh, I just got a hit on someone who matches Monica's description

我刚查到有个符合莫妮卡长相的人