Just my two cents...
I've looked at a lot of SLP program admission requirements and they all seem to point at answering this question: Do you have the academic strength to do well in grad school? It may seem strange, but several applications DO NOT want you to talk about how you came to love SLP! Rather, they want you to talk about how you are prepared to do well in grad school and what you can personally contribute to the school and your fellow cohorts. Since you have an upward trend in grades in undergrad as well as grad school, I think you have a decent shot. If I were in your position, I would take great pains to make absolutely sure that my letters of recommendation, personal statement, and GRE are they strongest they can possibly be. Get profs that know your academic achievements to write your recommendations, rewrite and get others to read your personal statement and don't be happy with it until it shines, and prep for the GRE like a madman. After that, the rest is in their hands, isn't it?
I think that you're underestimating your chances of getting into an SLP program. Bolster up the rest of your application and you'll do well!