Is this a good thesis:

Question

Throught "The Window's Lament in Springtime" the speaker sybolizes the widows' wallow in sorrow from the passing of her late husband and her struggles of being able to move forward without him.

...Is there this one focus or do I have to take things out? Because I thought that a thesis is supposed to keep the reader on one topic and that's it..I'm just not sure if this is right.