Ask why the referral was made. Some lender and lawyer referrals are reciprocal business relationships, which is not improper, but it means the recommendation is not necessarily based on who negotiates hardest for you or who knows your specific neighbourhood best.
Interview a couple of other realtors before committing, comparing at least 2 to 3 comparable sales each one shows you for your street. A short conversation about how they would price and market your specific home tells you more than a referral alone.
Joel Dyck, REALTOR® with Real Broker SK Ltd., is happy to be one of those conversations even if a lender or lawyer sent you elsewhere first. Get your hand-reviewed valuation from Joel Dyck.